Machine for nailing soles to uppers



(No Model.) 5 Sheets- Sheet 1.

0.1ASHTON. l MACHINE PoR NAILING soLEs To UPPBRS. No. 602,184. PatentedApr. 12,1898.

A .by l-nmm (t l E '5 i f Y# m0 Modem 5 sheets-sheet 2.

0. ASHTON.

MACHINE EUR NAILING SOLES T'o UPPBRS.'

No. 6`0'2,l14. l Patented Apr. 12, 1898.

7i, M1-1255555 l |NVENTUR:

(No Model.) 5 sheets-sheen 3.

0. ASHTON.. MACHINE FORNAILING SULES T0 UPPERS. v N0.`602,184. 1898.

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W. d v 0 Lf? mm O e Je fop@ f m @Q ya lila. w IL I l Il@ |i l m\\i HHM/dl y Halli m W m m l /HJT ,1 ll 1e m m a W e. e @w L n W/ uw anu...

(No Model.) 5 Sheets-Sheet 4.

0. ASHTON.

MACHINE POR NAILING SOLES TUUPPBRS; No. 602,184. PatentedApr. 12, 1.898.

(No Model) .5 Sheets-Sheet 5.

0, ASHTON.

.MACHINE FOR NAILING SOLES T0 UPPBRS.

No. 602,184. Patented'Apr. 12,1898.

TSJ v NrTED STATES PATENT FFICE.

ORRELL ASHTON, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR TO JAMES WV. BROOKS,PRINCIPAL TRUSTEE, OF PETERSHAM, AND F. F. STANLEY, ASSOCIATE TRUSTEE,OF BOSTON, MASSACHUSETTS.

SPECIFICATION forming pare of Letters Patent No. 602,184, dated April12, 1898.

Application ined me 24, 1897.'

feed of the wire being automatically regur lated according to thethickness of Athe sole.

The invention consists of a machine provided with certain features ofconstruction and larrangement of parts, such as clearly illustrated uponthe accompanying drawings and now to be described in detail, and pointedout in the claims hereto'annexed.

Reference is to be had to the accompanying drawings, and to the lettersmarked thereon,

forming a part of this specification, the same letters designating thesame parts or features, as the case may be, wherever they occur.

Of the drawings, Figure 1 represents in side elevation one form ofmachine which I have selected for the purpose of illustrating anembodiment of the invention. Fig. 2 represents a side elevation of thehead of the machine somewhat enlarged. Fig. 3 represents a frontelevation of the same. Fig. 4 represents an elevation from the otherside of the machine. Fig. 5 represents in vertical longitudinal sectionthe spindle. Fig. 6 represents in detail the work or shoe feed. Fig. 7shows a section on the line 7 7 of Fig. 5 and representsautomatically-operating devices for feeding the wire. Figs. 7L and 7bshow in detail a different mounting for the feedrolls. Fig. 8 representsin longitudinal vertical section a portion of the spindle and themechanism for holding the wire against back thrust. Figs. 9 and IOshowin detail another arrangement 4for preventing the backward movement ofthe wire. Figs. 11, 12, 13, and 14 show in detail the mechanism whichcontrols the reciprocation of the horn and pre-` 5o vents the horn frombeing moved when there Serial No. 642,101. (No model.)

is no work between it and the nose or the 'guard-plate. Fig. 15represents in detail the cams and levers for actuating the shoe or workfeeding devices and the mechanism for operating the cutters which severthe wire after it has been fed a sufficient distance into the work.Fig..16 shows in detail the friction devices for the wire-reel. Figs. 17and 18 illustrate the arrangement of the footlevers and the manner ofsupporting them.

Before proceeding to describe the machine referred to in the foregoingbrief description -of the figures of the drawings I desire to have itunderstood that that particular machine has been selected by me only forthe purpose of illustrating one embodiment of the invention and that Ido not limit myself to the particular details of construction thereof,as the invention is capable of being expressed in many different ways,and the parts thereof may be varied as desired to suit particularrequirements.

Referring to the drawings, a indicates a standard having a base a' and ahead a2, the latter being secured upon the standard by bolts @23 in theordinary manner. The standard is formed or provided with brackets a3,which provide bearings for the main drivingshaft b, which is mountedtherein and which is rotated by a band wheel or pulley, as is usuallythe case. On its end the shaft has keyed thereto a band-wheel b', fromwhicha belt h2 passes around idler-pulleys b3 b3, suitably j ournaled inan extension of the head a2, and around a pulley b4 in threadedengagement with the upper end of the spindle c.

A belt-tighte-ner consisting of a lever b5, journaled on the shaft b andhaving on its end a loose pulley h6, is pressed against the belt b2 by aspring 197, as shown in Fig. 1.

The spindle c, before referred to,is arranged vertically, as it isusual, and is provided with a yoke c to receive a wire-reel c2, fromwhich the wire is fed through a longitudinaly aperture c3, which extendsthrough the spindle, as

shown in Fig. 5, from the yoke to the lower end thereof. The head a2 isformed with a spherical casing a4 to receive the yoke and the wire-reelc2, there being a hinged door a5 to cover an aperture in its face,through which roo access may be had to the rcel to pass the wire throughthe duct or aperture in the spindle c to the wire-feeding devices.

The wire-reel c2 is formed with a hub w and end iianges w', each ofwhich has an unbroken friction-rim 102, as shown in Fig. 2, and threeapertures w3, through which access may be had to the wire to remove thebinders therefrom. Through the hub of the reel passes a pin Q04, havingan enlarged head 105 and a portion w next to the head, which is formedwith a left thread to engage internal threads in the yoke c. The outerend of the pin, which is not shown, is smooth and'non-threaded, thethreads w being alone relied upon for holding it in place. Secured tothe yoke are friction-shoes w7,bearing against the frictionrims 102 ofthe reel and drawn toward each other by a spring w8. Thus the rotationof the wire-reel is frictionally retarded to prevent the wire from beingdrawn from it too rapidly, so as to loop or bend.

To the upper portion of the tubular casing is secured a cap a, having abearing consisting of a tubular extension a7, which is flared at as. Ahard brass bushing a is inserted between the spindle c and the tubularextension, and in the flaring portion of the latter there is ahard-metal ring am, between which and the ring a, upon which the hub ofthe pulley b4 rests, is placed a series of antifrictioncones am.

In a bearing @33 in the lower portion of the casing a4 is anotherbushing (L42, through which the spindle passes, so that the spindle ismounted in bearings both above and below the reel, whereby it is heldagainst lateral vibration in case the corrugated or threaded wire iswound unevenly upon the reel.

The head a2 is provided with a third bearing on an arm a, through whichthe spindle also passes, there being another bushing am arranged betweenthe spindle and the bearing thus afforded, this last-mentioned bearingbeing relatively near the lower end of the spindle, whereby the latteris held in bearings at its ends and at a point intermediate thereof andis at all times properly centered.

I shall now proceed to describe the devices which feed the wire throughthe spindle.

In the lower end of the spindle is inserted a throat-piece d, theaperture or throat of which is only large enough to receive the Wire,which ts snugly therein, said throat-piece being held in place by ascrew (Z, as shown in Fig. 5. Surrounding the lower end of the spindleis a sleeve d2, having inwardly-projecting guides cl3, secured theretoby screws d4 and projecting into grooves cdin the spindle. Preferablythere are three of these guides, although I may use any other number, ifdesired. The sleeve is provided at its upper end with a shoulder di",between which and a collar (Z6, threaded thereon, is placed a ring CZ7,there being suitable antifriction-cones d8 inserted between the ring andthe collar and the shoulder. The ring di is supported in the yoke e onan arm e, secured to a verticallyrcciprocatory shaft e2, as shown inFig. 2, and which I shall afterward describe. Thus the sleeve isconnected with the spindle, so as to turn therewith, but is free to bereci procated longitudinally thereof to feed the wire therethrough byfeeding-disks supported by the sleeve.

The spindle and the throat-piece are provided with three longitudinalslots in alinement with the grooves c4, and in each slot there is placeda serrated wire-feed roll f. Each roll is placed in a cavity in africtionblock f and is provided with studs or gudgeons projectingloosely into enlarged sockets in two bell-crank levers f3 f3, arrangedon both sides of the block f. The levers and the block are pivoted upona screw-pin f4, passed through apertures in the sleeve, such as shown inFigs. 6 and 7, there being a spring f5 for each pair of levers f3 f3, bywhich the feeding-disks are held in engagement with the wire.

By examining Fig. 5 it will be noticed that the axes of the feed-rollsff are in-a plane below the plane of the axes of the screw-pins f4, sothat, although the rolls will roll over the wire when the sleeve d isbeing raised, they will tightly wedge or grip the wire between them whenthe sleeve d2 is moved downward, so as to carry the wire with themthrough the aperture in the spindle and the throat-piece.

I may dispense with the additional bellcrank levers, if desired, andalso with the springs by forming the frictionblocks as shown in Figs.7"L and 7b and by placing the rolls loosely i-n the cavities therein. Inthis event the blocks f7 f7 for the rolls are relatively wide and areprovided with upwardlyprojecting ends fS f S, which operate as weightsby centrifugal action to throw the rolls inward to grip the wire whenthe roll-carrying sleeve is moved upward.

In order to prevent any backward or upward movement of the Wire when thesleeve d is being raised for the disk to obtain afresh grip prior tofeeding the wire down through the spindle, I employ a backstay orlocking mechanism for the wire, such as shown in Fig. 8 or in Figs. 9and l0.

First, referring to Fig. S in connection with Fig. 5, it will be seenthat a collar gis secured to the spindle by one or more screws g', andthat placed loosely upon the spindle above said collar is a cup orflanged collar g2, having oppositely-arrauged leaf-sprin gs g3. Thespindle is formed with a transverse aperture (Z9 to receive tworoll-carrying friction-blocks g4 g5, between which are placed rolls gQ7, having serrated edges to engage the wire between them. In this casethe rolls gf (/7 are maintained at the same distance apart, but theirrotation may be retarded bythe sprn gs g3 g3 bearing against the blockg5. By this arrangement the block g5 will yield when the wire is drawndown between the rolls; but as soon as the tension upon the wire ceasesthe IOO IIO

rolls are immediately locked against rotation by the springs g3 pressingthe block g5 upward and the wire is prevented from moving in theslighest degree backward past the disks. The tension of the springs g5may be increased or diminished by rotating the anged collar g2 about thespindle, as will be readily understood.

In Figs. 9 and 10 another backstay or locking mechanism for the wire isshown in which the toothed or serrated rolls are movable toward and fromeach other and are held against backward rotation by the engagement oftheir friction-blocks. Instead of the blocks g1() being dividedhorizontally, as in Fig. 8, they are divided vertically and each isprovided with a socket to receive one ofthe rolls g5 or g7 and also withan aperture gl1 to receive the wire. The springs Q12 are secured to thecollar g2, so as to bear inwardly against the friction-blocks, and bythis arrangement the rolls allow the wire to be drawn down freely underthe draft of the feed-rolls, but operate to prevent any backwardmovement thereof, except under a powerful draft from above. The pressureof the springs Q12 may be increased or decreased by rotating the collarg2.

The sleeve cl2 on which the feed-disks are mounted is reciprocated bythe following devices: The shaft e2, before referred to, which wasdescribed as having an arm e with the yoke e to receive the ring (Z7, ismounted in bearings 1,15 a, as shown in Fig. 2, projecting out from thehead a2. The shaft is held raised bya strong spring e5, having one endattached to the shaft and the' other end placed over a hook e4,extending out from the casing a4. A sleeve e5 is secured to the shaft e2by a clamping-bolt e6 and a screw e7 and is provided with aforwardly-projecting arm es, constructed with downwardly and laterallyextending arms e9, in which is journaled a roll el". One of the arms e9is extended, as shown in Fig. 4, and is provided with another rollerell, placed on the' outer face thereof. A horizontal shaft Zt is mountedin bearings a als and is provided with a worm-wheel h', intermeshingwith a worm cl2, rigidly secured upon the spindle c. A cam h2 is securedupon the end of the shaft Zt by a collar h5 and is provided with tworises h5 h5, as shown in Fig.'3, and it extends between lips or lugseiprojecting u pwardly from the arms e9. These lips or lugs operate tocenter the shaft e2 and to hold the roll e10 in parallelism with the camh2. Now it will be seen that as the spindle c rotates it transmits powerto the shaft h through the worm and worm-wheel 012 Zt, and that,therefore, a complete rotation of the cam h2 causes two reciprocationsof the shaft e2 by the rises on the cam engaging the roll @10, mountedon -the sleeve e5.

Itis necessary that the degree of movement given to the shaft c2 and thesleeve d2 should be regulated by the thickness of the sole of the shoewhich is being nailed in orderthat aV nail of the proper length shouldbe .screwed into the sole, and hence I provide means for varying thelength of feed of the wire, as I shall now describe.

The horn is mounted or secured to a shaft movable in a vertical guidewayor bearing 2, supported by the standard or post a, and to the lower endof the shaft t" is secured an v arm 5, which is connected by aconnecting-rod 4 with a lever 5, fulcrumed at its center upon a stud 6,extending out from the head a2.. On its end the lever 5 isl formed witha block t'7 to operate as a stop to limit the upward movement of theshaft e2, the arm c on the last-Vv 5 is tilted so that 'the block 7prevents the shaft e2 from rising; but if the tip of the horn be loweredto receive a sole between it and the said guard-plate Zr the block 7will be raised a corresponding distance, so that the shaft e2 may bereciprocated through a distance equal to the thickness of the sole. Therises h4 h5 on the cam h2 always force the shaft e2 down to the samepoint; but the distance traversed by the shaft @2in rising, andtherefore by the sleeve (Z2 and the feed-disks, will be only equal tothe .distance the tip of the horn has been moved from its normalposition by the sole being placed between it and the plate Zt. Thereforewhen the spindle is rotating and the machine is in operation the nailsor screws will be forced into the sole for a distance equalto thethickness of thev sole, and after they have been thus fed they will becut oif by cutting mechanism -consisting of two cutters Z Z, as shownin'Figs. 5 and l5. Two disks Z2 Z3 are journaled on the stud extendingout from the head a5, and in guide- The two disks are provided v IOCyIIO

5. On the end of the lever Z8 is a hard-metal bar or block' Zn, withwhich two cam-blocks m m on the disk m alternately engage to tilt thelever and operate the knives to cut the wire. The cam-blocks m m maybemade of hardened steel and may be replaced when worn out, beingremovably mounted-in the cam-disk m and held therein by screw m2. Thesaid cam-disk m is mounted upon the shaft 7L, as shown in Fig. 4.

The parts are so timed that as soon as the feed-disks have reached thelowest limit of their movement, so that the wire has been fed in throughthe sole of the shoe a proper distance, the cutters ZZ are broughttogether with an equal movement, and the wire is severed before thesleeve d2 begins to move upward. The guard or work plate 7.: is securedto one of the holders for the knives.

In order to feed the shoes or work laterally, I provide the improvedmechanism shown in Figs. 2, 4, 6, and l5. A rack-slide n is mounted inguides below the head a2 and is adapted to be moved in and out by ahandle n', clamped on the end of a shaft, on which is mounted a smallpinion n2, as shown in dotted lines inFig. 2. By turning the handle theslide may be adjusted to any desired position, but is held frommovement, except under considerable pressure, by pins n3 and flatsprings n4, which press the pins against the slide at the sides thereof.At its front end the slide is cut away, as shown in Fig. 6, to receive alever a5, pivoted at n and having segmental ratchet-teeth a7, which areeccentric or in a spiral line with respect to the pivot ai'. The end ofthe lever is provided with a spherical socket 'a8 to receive theballlike end n of a connecting-rod n10, pivoted to a pin or swivel n,set in the end of a camlever m12, as shown in Fig. 15. The end of theslide n is provided with upwardly-projecting iianges or guards 91,13,(best shown in Fig. 3,) beyond which the teeth of the segmental leverproject.

When the shoe is placed upon the horn, the edge of the sole is heldagainst the segment-lever by the operator, so that when said lever isrocked in the direction of the arrow in Fig. G the work will be fedforward, and by reason of the teeth being eccentric the work will bereleased as the teeth move backward, as will be readily understood. Thelever w12 is provided with an elongated hub 72,14 and is fulcrumed on asleeve 0, supported in a bearing al, afforded by a bracket extending outfrom the head a2. The free end of the lever 71.12 is provided with aroll w15, bearing against a cam p, secured upon the shaft h, and is alsoprovided with a bunter or adjustable screw nl, which is arranged tostrike against the bearings als and limit the inward movement of thesaid upper end of the lever n.12. Upon the hub n of the lever n@ isclamped an arm nl?, having a roll als, bearing against a cam p' on theshaft h, the cams p p' being placed on both sides of the cam-disk m',before referred to. The said I find it desirable to employ this positivemechanism for returning the segment-lever to its normal position afterhaving fed the work forward, for the reason that unless a mechanism ofthis kind be employed in lieu of a spring the segment-lever willsometimes remain in engagement with the work and will not return at theend of a stroke.

When the work is being fed forward, the horn is depressed and the sleevein which the wire-feed rolls are mounted is at rest, so that the work isfree; but when the workfeed lever is returned to its normal positionafter having fed the work forward the work is clamped against the guardk by the horn, so that thc said lever is free to return without it.

The movement of the feed-lever may be varied to regulate the distancebetween the nails in the sole by adjusting the bunterscrew which limitsthe rearward movement of the said lever and adjusting the arm n aroundthe hub n of the lever w12, so that when it is forced outward to itsgreatest eX- tent by a rise on the cam p the bunter will be against thebearing als.

I provide for automatically raising and lowering the horn to grip orrelease the shoe or work by the following devices: Upon the shaft h isplaced a path-cam Q, which extends through an aperture in the head a2and which is formed with its groove to receive a roller on the endof aforked lever Q/, journaled on a stud-shaft Q2, extending through abearing @21, formed in the head, as shown in Figs. 2 and l1. In the endof the lever Q" is journaled a toothed wheel o, having anaxiallyarranged stop-bar r and formed in one face with clutch-teeth r2,so that the said wheel constitutes one member of a clutch. A stationarysleeve r3 is threaded into the `arm Q4 of the forked lever Q and islikewise formed with clutch-teeth r4, so as to constitute a stationarymember of a clutch with which the movable rotatable clutch may beengaged. Passing through the said sleeve r3 is an axially-movablestndshaftr5, rigidly connected to the clutch-wheel r, and which whenmoved acts to disengage it from the stationary clutch member, and whichalso has a conical head T7.

A spring rs is arranged in a socket in the opposite arm Q5 of the forkedlever Q and operates to normally hold the two members of the clutchtogether, whereby the clutch member r is prevented from rotating in onedirection, but is free to slip over the teeth of the stationary memberin the other directionthat is, the direction of the arrow in Fig. 13. Inthe said arm Q4 of the lever Q is secured an adjustable stop r, againstthe end of which the end of the stop bar or block r' may engage to holdthe two clutch members apart.

Normally-z'. e., when there is no work inthe machinethe two stops are inalinement and contact with each other. A roll r1@ is journaled upon astud r11, extending between the two arms Q4 Q5 of the shaft Q', andoperates to hold a rack sin engagement or in mesh ICO IIO

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with the toothed clutch member T. The said rack s is threaded upon theend of a rod s', whose lower end is pivoted to the end of a lever s2,fulcrumed upon the pivot pin or stud 5 j* and having its other endconnected to the extension j' of the shaft i', before referred to. Afoot-lever s3 is connected to the studj4, so that by depressing the saidlever the horn may be lowered for the insertion of work between it andthe guard 7c below the spindle. When the horn is so lowered, theconnectingrod s is raised slightly, as will be readily seen, which it isfree to do, since the clutch T is always at liberty to rotate in thedirection of the arrow in Fig. 13.

A stationary cam t is mounted in a bracket t on the head a2 and engagesthe conical end T7 of the stud-shaft T5 when the lever q is in itslowest position to thrust the said lshaft longitudinally and disengagethe clutch member T from the clutch member T3, whereby the said member Tis free to be revolved i either direction.` A Y When there is no work inthe machine, the stops T' and T9 are in alinement and in contact and theclutches are held apart, so that the reciprocation of the lever q doesnot affect the clutch T, as the face of the stop T9 slides against theface of the stop T', which is elongated for this purpose.

Upon the treadle s3 being depressed and a shoe being placed on the hornthe rack s is lifted and partially rotates the clutch T and throws thesaid stops out of alinement and contact, as shown' in Fig. I3, whereuponthe spring T8 causes the engagement of the clutches. So long, therefore,as the shoe remains upon the horn the clutches will be locked together(except during those instants when the end of the shaft T5 is inengagement with the cam t) and the lever q will reciprocate the horn,during which period the work will be fed forward at each depression ofsaid horn. Hence although when the machine is in operation the lever q'is continuously reciprocated, yet the horn remains quiescent except whenthere is a shoe upon it. In this way I am enabled to avoid a wastage ofpower and to greatly prolong the life of the machine, as will be readilyappreciated.

I am aware that it is not broadly novel to automatically stop the'reciprocation of the horn when there is novshoe upon it but themechanism above described is more efficient in operation than anyheretofore used and is a feature of the present invention. Prior to thistime a pawl and ratchet have been employed for holding the toothed wheelstationaryg'but they were faulty because of the entire strain beingborne by a single tooth with which the pawl engaged, whereas Iprovide'confronting clutches provided with a large number of radialteeth which engage simultaneously as the clutches are brought together,so that the strain is borne by all of them. In addition to-thesefeatures I also provide mechanism' foi1 preventing a reciprocation ofthe sleeve4 Referring to Figs. 1 and 4, it will be seen that a slide ais mounted in a guideway extending out from the lower part of thebearing-arm a and is provided with a rod or extension u', which extendsthrough the sleeve o, before referred to, and is normally held forwardby a spring u2. On the end-the rod u' is provided with a collar a3,having its face beveled o or wedge-shaped in longitudinal section. A rodo, sliding in a bearing o', is connected at its lower end to afoot-lever o2, fulcrumed in ears in the base of the standard a, and hasits upper end forked and wedgeshaped, as at v3, so that when thefoot-lever is depressed the rod is -forced upward and its upper endengages the collar w3 and moves the locking-slide u longitudinally into`its guide. The sleeve e5, which, as before stated, is secured upon thevertically-reciprocating shaft e2 and is provided with the roll en, isso arranged with relation to the locking-bar u that when the bar u isWithdrawn the roll e slides upand down in front of the end thereof, andwhen the said shaft e2 is in its lowest position the roll en is directlybeneath the locking-bar u. Hence the said shaft e2 is free to bereciprocated so long as the operator keeps his foot upon the treadle orfoot-lever o2, but when the foot is removed and the rod 'U drops thespring u2 throws the locking bar or stop u outward to engage the rolle', since-l the cam h2 forces the roll el@ down far enough, as shown inFig. 4. The locking bar or stop u holds the shaft e2 and the sleeve d2against movement so long as the treadle o2 remains undepressed. Thus'the feeding mechanism is under the direct control of the operator, ashe may stop the action of the said feeding mechanism after eachreciprocation thereof, if he so desires.

It will be observed that the treadle o2 is located beside and just belowthe horn-operating treadle s3, so that immediately after the horn hasbeen depressed he may shift or drop his foot fromv the treadle s3 to thetreadle r2. The latter is located near the ground, so that the operatormay stand with his foot upon it during the operation of nailing a shoewithout experiencing any discomfort therefrom.

The operation of the machine is as follows: The parts being in theposition shown in Fig. lfthe operator placing his foot upon the treadles3 depresses it and lowers the horn sufficiently to place a shoe uponit'. The shoe is arranged with the heel to the left and with the edge ofthe sole bearing against the segmental feed-lever m5. As the horn isbeing lowered the rod s' and the rack s on the upper end thereof arefree to move relatively to the lever q', as the teethof the clutchl Twill slide over the teeth of the stationary clutch, as has beenpreviously explained. When the foot is removed from the treadle s?, thespring IOO IOS

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j elevates the horn and causes itto press the sole of the shoe againstthe guard or work plate 7a, the thickness of the sole preventing thehorn from returning` to its original position. rlhe clutch member r isat this time partially rotated, as shown in Fig. 13, so as to bring thestop r out of alinement with the stop-bar r9, as shown in Fig. 13,whereby the subsequent reciprocation of the said lever q will cause therod s to be moved up and down with it, since the two clutch members willbe engaged by the spring rs each time the shaft T5 leaves the cam Henceso long as the shoe remains upon the horn the latter willbe reciprocatedby the said lever q. The depression of the horn by the sole shifted thelever 115, so that the block 7 now permits the shaft e2 to be raised adistance equal to the thickness of the sole'. Then the operator, placinghis foot upon the treadle '02, withdraws the locking bar or stop u andpermits the shaft e2 to rise until the roller 8 engages the block 7.Then as the cam h2 revolves one of its rises engages the roll el@ anddepresses it, forcing down the shaft c2 a distance equal to thethickness of the sole. As the said shaft e2 begins to descend it carrieswith it the sleeve d2, and upon the first motion of the sleeve thewire-feeding rolls engage the wire, so that as the sleeve continues todescend the wire is carried slowly down, and the spindle being rotated arelatively high rate of speed the nail is screwed into the sole of theshoe. Immediately upon the said sleeve cl2 reaching the lowest limit ofits movement one of the cam projections m on the camdisk m strikes thelever ZS and causes the cutters to be moved together with an equalmovement to sever the wire fiush with the surface of the sole. Then asthe sleeve d2 rises the horn is depressed by the said lever q', the racks, the rod s', and the lever s2, whereupon the lever 71.12 is operatedby the cam QJ to swing the segment work-feeding lever a5 in thedirection of the arrow in Fig. 6 to feed the work forward. During thistime the backstay prevents the wire from rising. After the work has thusbeen moved forward the horn is again raised and another nail is screwedin to the sole by a similar cycle of operations.

From the foregoing it will be observed that I have provided a machinewhich though possessing a minimum of parts operates to nail a shoe in athorough and efficient way.

The wire is fed positively into the shoe by a mechanism which grips itfirmly, and it is prevented from moving backward when the feed-rolls arebeing carried upward to again grip the wire. By employing feeding-rollssuch as I have shown in Figs. 5, 7, and '7" and arranging them to gripthe wire between them I am enabled to force the wire down positively andto prevent it from slipping.

The feed-rolls roll easily over the wire when their supporting-sleeve(Pis being raised; but immediately upon the sleeve being lowered `meansfor holding the reel in the yoke.

employing machines of this class the dislocathey automatically moveinward to engage the wire. By forming the gripping devices in the shapeof rolls the teeth of the latter remain sharp for a greater length oftime than they would if said devices were in the nature of non-revolubletoothed plates or dogs. i

Again, by reason of the rolls being continuously engaged with the wire(and the wire being held against backward movement and beingfrictionally held against downward movement) the rolls gripitimmediately upon their being moved downward to the slightest degree, andhence there is no lost motion of any of the parts, and, moreover, therolls grip the wire positively and powerfully, although they do notdeface or injure it in any way, which, it will bereeognized, is ofconsiderable importance.

Upon examining Fig. 5 it will be noticed that by employing this feedingmechanism for the wire I am enabled to employ a very simple form ofspindle. The throat is set into the spindle almost its entire length andis cylindrical in shape, with longitudinal slots to permit movement ofthe feeding rolls. Thus it may be easily constructed and costs littlewhen compared with the throat-pieces necessary in other machines of thisclass.

The mechanism for holding back or cheeking the backward movement of thewires is very simple; but it operates in a highly-efficient manner,since it immediately locks the wire as soon as the downward tensionthereupon ceases.

Another feature of this invention is tlIie tion of the reel frequentlycauses severe injury to the machine and endangers the life and limb ofthe operator, and hence where a nutted bolt is employed the liability ofthe operator forgetting to screw the nut in place is a constant sourceof danger. I employ, as before described, a pin having at the head endleft-hand threads, whereby when it is screwed into the yoke there is nodanger of its working loose and whereby it must be secured in placebefore the reel can be used.

There are other important features of the invention, which I havehereinbefore described and to which I need not again refer.

Having thus explained the nature of the invention and described a way ofconstructing and using the same,though without attempt ing to set forthall of the forms in which it may be made, I declare that what I claimisl. In a nailing-machine, in combination, a rotaryspindle, and meansfor feeding the wire therethrough comprising loosely mounted rollsarranged to roll over the wire when moved in one'direction and to gripit between them when moved in the other direction.

2. In a nailing-machine in combination, a rota-ry spindle, and means forfeeding a threaded wire therethrough comprising oppositely-arrangedloosely-mounted toothed rc lls IOS IIO

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arranged to roll over the Wire when moved in one direction and to gripit when moved in the other direction, and means for supporting andreciprocating said rolls.

3. In a nailing-machine, in combination, a rotary spindle, and means forfeeding the Wire therethrough consisting of a reciprocatory sleeverotatable With the spindle, serrated rolls, and means for supportingsaid rolls on said sleeve, said means being constructed and arranged topermit the rolls to pass over the Wire When moved in one direction, andto positively grip and feed the Wire when moved in the other direction.

4. In a nailing-machine, in combination, a rotary spindle, and means forfeedingthe Wire therethrough consisting of a reciprocatory sleeverotatable With the spindle, a series of coacting serrated rolls, andfriction-blocks for said rolls, supported by the sleeve.

5. In a nailing-machine, in combination, a rotary spindle, and means forfeeding the wire therethrough, consisting of a reciprocatory sleeverotatable with the spindle, a series of loose serrated Wire-feedingrolls, and a friction-block for each roll pivoted on the said sleeve.-

6. In a nailing-machine, in combination, a rotary spindle, and means forfeeding the Wire therethrough, consisting of a reciprocatory sleeverotatable with the spindle, a series of loose serrated Wire-feedingrolls, and a friction-block for each roll pivoted on the said sleeve,the axes of movement of the frictionblocks being out of the plane of theaxes of the rolls.

7. In a nailing-machine, in combination, a rotary spindle, and means forfeeding the wire therethrough, consisting of a reciprocatory sleeverotatable with the spindle, a series of loose serrated Wire-feedingrolls, a frictionblock for each roll pivoted on the said sleeve, andsprings for thrusting the rolls into engagement with the wire.

8. In a nailing-machine, in combination, a rotary spindle, and means forfeeding the Wire therethrough, consisting of a reciprocatory sleeverotatable With the spindle, a series of loose serrated Wire-feedingrolls, a frictionblock for each roll pivoted on the said sleeve, andspring-held means for thrusting the rolls into engagement With the wire.

9. In a nailing-machine, in combination, a rotary spindle, means forfeeding the Wire therethrough, and means for checking a backwardmovement of the Wire comprising springpressed serrated rollers.

10. In a nailing-machine, in combination, a rotary spindle, means forfeeding the wire therethrough, and means for checkingaback- Wardmovement of the Wire comprising serrated rollers and friction blocks forsaid rollers.

11. In a nailing-machine, in combination, a rotary spindle, means forfeeding the Wire therethrough, and means for checking a backwardmovement of the Wire comprising ser- .rated rollers and spring-pressedfriction- 13.- In a nailing-machine, in combination, a

rotary spindle having a through -aperture, friction-blocks inserted insaid aperture, coacting serrated rolls supported by the blocks, a collaron said spindle, and springs supported by said collar and bearingagainst the friction-blocks.

14. In a nailing-machine, in combination, a rotary spindle having anaperture in its lower end, a cylindrical throat-piece inserted in saidspindle and having a projecting end, a reciprocatory sleeve, andfeeding-rolls supported by said sleeve and projecting through slots inthe throat-piece and spindle to grip the Wire.

15. In a nailing-machine, in combination, a spindle, means for feedingWire therethrough, a roll supported by the spindle, and havingfriction-rims, spring-pressed friction brakeshoes bearing against saidfriction-rims to retard the rotation of the reel and a spring connectingsaid shoes.

16. In a nailing-machine, in combination, a spindle, means for feedingWire therethrough,

a yoke connected With the spindle, a Wirereel supported in the yoke, anda journal-pin headed at one end and threaded at said end to engage theyoke.

17 In a nailing-machine, in combination, a rotary spindle, areciprocatory sleeve having means for feeding the Wire through thespindle, a transversely-arranged rotary shaft having a cam, areciprocatory shaft arranged parallel to the spindle, an arm carried bysaid reciprocatory shaft and having cheeks or lugs embracing said cam, aroller on said arm, and means for connecting said reciprocatory shaftwith said sleeve.'

18. In a nailing-machine, in combination, a spindle, means for feedingthe Wire through the spindle, a reciprocatory shaft from which motion istransmitted to the feeding means, means for reciprocating said shaft,and mechanism for controlling the movements of said shaft, comprising alocking-stop and a footlever fulcrumed at the base of the machine andconnected to said stop.

19. In a nailing-machine, in combination, a spindle, means for feedingthe Wire through the spindle, a reciprocatory shaft from which motion istransmitted to the feeding means, means for reciprocating said shaft,and mechanism for controlling the movements of said shaft comprising asliding stop, a verticallyacting Wedge to engage said stop, and a leverconnected to said Wedge.

20. In a nailing-machine, in combination, a

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spindle, means for feeding the wire therethrough, a reciprocatory shaftfor operating the wire-feeding means, an arm on said shaft having aroller, and mechanism for controlling said shaft comprisinga spring-heldsliding stop, a wedge to engage the stop, a connecting-rod, and treadleto operate as described.

21. In a nailing-machine, in combination, a reciprocatory toothedfeed-lever, a lever for moving the feed-lever in one direction, an armadjnstably connected to the said lever for moving said feed-lever in theother direction, and two cams for acting on the said levereand the armconnected therewith.

22. In a nailing-machine, in combination, a reciprocatory toothedfeed-lever, a two-armed lever for moving the feed-lever positively ineach direction, cams for acting on said arms alternately, and means forlimiting the degree of movement of the said two-armed lever.

23. In a nailing-machine, in combination, a reciprocatory toothedfeed-lever, a two-armed lever for moving the feed-lever positively ineach direction, cams for acting on said arms alternately, means foradjusting one of said arms relatively to the other, and an adj ust--ing-screw for limiting the degree ot' movement of the said two-armedlever.

24. In a nailing-machine, in combination, a reciprocatory horn, avibrating lever, and a clutch mechanism having a laterally-movablemember for connecting the lever and horn only when the horn is partiallydepressed.

25. In a nailing-machine, in combination, a reciprocatory horn, avibrating lever, a rod connected with the horn and having a rack, astationary toothed clutch on the lever, and a revoluble clutch inengagement with the rack, said parts being constructed and arrangedwhereby when the horn is in its inoperative position the two clutchesare out of engagement.

26. In a nailing-machine, in combination, a reciprocatory horn, avibrating lever, a rack connected with the horn, a toothed clutchrollmounted on said lever, a stationary clutch confronting the revolubleclutch, stops on said clutches, and a spring for thrusting the clutchesinto engagement, said parts being constructed and arranged whereby thehorn is not reciprocated when there is no shoe upon it.

27. In a nailing-machine, in combination, a reciprocatory horn, avibrating lever, a rack connected with the horn, a treadle fordepressing ilie horn, a stationary toothed clutch on the lever, a rotaryclutch mounted on the said lever and meshing with the rack, coactingstops carried by said clutches, and a cam for acting on the rotaryclutch to throw it out of engagement with the stationary clutch.

28. In a nailing-machine, in combination, a reciprocatory horn, avibrating lever, a rack connected with the horn, a toothed clutch-roll journaled on said lever, a stationary toothed clutch on said lever, aspring for thrusting said clutches into engagement, coacting stopscarried by the said clutches, and a cam for thrusting said clutches outof engagement.

29. In a nailing-machine, in combination, a spindle, means for feedingthe wire through said spindle, mechanism for controlling the saidwire-feeding means, a horn, means for depressing said horn, and treadlesor footlevers arranged in proximity and one below the other, one treadleconnected to the horndepressing means, and the other connected to theWire-feed Controlling means.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 19th day of June, A. D.1897.

ORRELL ASHTON. Witnesses:

M. B. MAY, C. F. BROWN.

